WO3 thin film in the form of nanowires can be prepared into a gas sensor for efficient NO2 sensing. You know, NO2, mostly produced from exhaust fumes of cars and factories, has been labelled by the World Health Organization as one of the most hazardous air pollutants. Although metal oxide-based thin films have been employed to detect NO2 earlier, significant challenges remain to be addressed particularly at low detection limits. This is presumably undermined by the low surface area and…

Tungsten oxide is an idea material for NO2 sensing. It has been reported that tungsten oxide based gas sensors exhibit excellent NO2 sensing properties to cover environmental standard of NO2. The experts have done researches to investigate several properties of nano crystallites of tungsten oxide including NO2 sensing characteristics. More details, please visit: http://tungsten-oxide.com/index.html In this study, an aqueous sol dispersing nano crystallites of WO3·2H2O was subjected to a centrifugal treatment for 1 or 10 h, to obtain two kinds…

Tungsten oxide is an electrochromic material that has been widely used as an electrochromic layer for assembling a new smart glass. The researchers have selected nano composite materials of tungsten oxide and niobium oxide to create such a smart glass. The substrate of the smart glass is amorphous niobium oxide, in which a tungsten oxide nanocrystal mesh-like structure is embedded. Although the two materials are electrochromic materials, their absorption spectra are different when they change color. Tungsten oxide nanocrystals absorb…

W18O49 nanowire is a gas-sensing material with great development and application prospects due to its special structural characteristics. Wherein, W18O49 is also known as violet tungsten oxide. As we all know, nitrogen oxides are typical atmospheric pollutants, which pose a huge threat to the environment and human health. Research and development of high-sensitivity gas sensors and related gas-sensing materials that can be used to accurately detect and monitor NO2 gas have important practical requirements. More details, please visit: http://tungsten-oxide.com/index.html W18O49…

One-dimensional WO2.72 nanowire is also known as one-dimensional W18O49 nanowire, which can be synthesized by a simple, template-free solvothermal method. Wherein, WO2.72 and W18O49 are the formulas of violet tungsten oxide. Studies have shown that one-dimensional WO2.72 nanowires can be used as counter electrode materials for dye-sensitized solar cells. Compared with the three-dimensional multi-level structure, one-dimensional WO2.72 nanowire counter electrode has two prominent features: More details, please visit: http://tungsten-oxide.com/index.html 1. Nanowires grow highly preferentially along the [010] crystal direction, which…

Tungsten alloy shield for dynamic multi-leaf collimator is tungsten alloy leaf on dynamic multi-leaf collimator. Certainly, there are multiple leaves. Dynamic multi-leaf collimator of linear accelerator was firstly used to replace conventional low melting alloy blocks, and was extensively used in clinical practice for the radiotherapy of different tumors. More details, please visit: http://www.tungsten-alloy.com/tungsten-alloy-radiation-shielding.html More specially, the dynamic multi-leaf collimator with tungsten alloy shield is now available as an integral or optional retrofit component of linear accelerator heads, permitting to…

Tungsten alloy leaf has high atomic coefficient and high density so that it has a strong ability to shield rays in a multi-leaf collimator. It has been reported that multi-leaf collimator with tungsten alloy leaf improves both the accuracy and the effectiveness of radiation therapy and reduces the time for every treatment dose, which potentially increases the number of patients treated every day. The multileaf collimator is presently an important technical tool either to replace conventional shielding for static conformational…

What is the working principle of tungsten alloy multi-leaf collimator? Let’s begin with some pieces of information of multi-leaf collimator. Tungsten alloy multi-leaf collimator, which was developed to replace the traditional lead blocks, are used on linear accelerators to provide conformal shaping of radiotherapy treatment beams. And specifically, conformal radiotherapy and intensity modulated radiation therapy can be delivered using multi-leaf collimators. The multi-leaf collimator has movable tungsten alloy leaves to block some fraction of the radiation beam. Typically, multi-leaf collimators…

A tungsten alloy multi-leaf collimator has been in routine clinical use for both conventional and conformal radiotherapy for many years. And there are many pieces of medical shields in tungsten alloy multi-leaf collimator. They are tungsten alloy leaves. According to a report, the collimator comprised of 80 tungsten alloy leaves and two orthogonal pairs of back-up collimators is used to replace the conventional treatment head of a linear accelerator. More details, please visit: http://www.tungsten-alloy.com/tungsten-alloy-radiation-shielding.html It has been reported that each…

It has been reported that the electron linear accelerator equipped with a tungsten alloy multileaf collimator can make the irradiation field as close as possible to the shape of the tumor, and achieve the purpose of killing the tumor cells to the greatest extent and affecting the normal tissue to the least extent. Generally, tungsten alloy multileaf collimators have unique designs for applying to different electron linear accelerators. More details, please visit: http://www.tungsten-alloy.com/tungsten-alloy-radiation-shielding.html Tungsten alloy multileaf collimator is an important…